Windows 10: Fix 0xC1900101 – 0x40021 Windows 11 Upgrade error

​

If you are experiencing Error 0xC1900101-0x40021, The installation failed in the SECOND_BOOT phase due to SYSPREP_RESPECIALIZE operation when upgrading Windows 11, you are not alone. This error indicates that the installation has got stuck right before the final setup stage. The good news is that this is almost always fixable. In this article, we will […]

This article Fix 0xC1900101 – 0x40021 Windows 11 Upgrade error first appeared on TheWindowsClub.com.

read more...

 

Error 0xC1900101 - 0x40021

Hello,

I'm trying to upgrade my Windows 10 to Windows 11 but I've got a blue screen with this error :
INVALID_DATA_ACCESS_TRAP

After that, when I came in Windows 10, the configuration of Windows 11 tell this error :

0xC1900101 - 0x40021 : The installation failed in the SECOND_BOOT phase with an error in the BOOT operator.

(This error occurs when I'm use the ISO file)
(I've already tried Windows 11 Installation Assistant)

Thanks

Also, I've an Ubuntu dualboot on my laptop

 

error 0xC1900101 - 0x40021

• 0xC1900101 - 0x40021 the installation failed in the SECOND_BOOT phase during SYSPREP_RESPECIALIZE operation.
• I dont know how to solve this, and I wasn't able to find a solution. Im upgrading from windows 7
  

 

Windows Update Error 0xC1900101- 0x40021

Please run the PC Health app and check if your system is compatible with Windows 11.

• How to use the PC Health Check app - Microsoft Support
  

The hardware and the BIOS versions are old, and i5-2400 is not listed in the CPU compatibility list for Windows 11.

Manufacturer: LENOVO

Model : 4518PQ6

BIOS name : 9HKT47AUS

BIOS version : 9HKT47AUS

BIOS release date : 20120110000000.000000+000

Even if we manage to fix the driver issues that cause the error 0xC1900101- 0x40021, you may not be able to install Windows 11 without bypass methods.